gravitation class 11 questions

Question 1. We know that. Find the velocity of the satellite at apogee and perigee. (d) more. NCERT Solutions for Class 11 Physics Chapter 8 Gravitation are part of Class 11 Physics NCERT Solutions. Give reason for your answer. (b) we will become hotter after billions of years. A star 2.5 times the mass of the sun and collapsed to a size of 12 km rotates with a speed of 1.2 rev. Initial potential energy at the surface of earth = GMem/’r. Answer: Here G = 6.67 x 10-11 Nm2 kg-2; M = 100 kg; R = 0.1 m, distance between the two spheres, d = 1.0 m The upward force exerted by the liquid displaced by the body when it is placed inside the liquid is called (a) Gravitational force (b) Force of gravitation (c) Buoyant force (d) Centripetal force Answer. MCQ Questions for Class 9 Science: Ch 10 Gravitation. of space ship is zero, therefore. (d) The formula – GMm (1/r2-1/r1) is more/less accurate than the formula mg (r2 – r1) for the difference of potential energy between two points r2 and r1 distance away from the centre of the Earth. The radius of the earth is 6400 km and g = 10 m/s². Our mission is to provide a free, world-class education to anyone, anywhere. The term gravity is used for gravitation, but gravitation is defined as the theory that explains the attraction while gravity is defined as the force that pulls objects towards each other. (a) Calculate height of such a satellite. Question 8. Assertion and Reason. Gravitation is important from the perspective of scoring high in IIT JEE, AIEEE and other engineering examination as the questions based on them are direct and do not have much twist and turns. Suppose there existed a planet that went around the Sun twice as fast as the Earth. Find eccentricity of the orbit. Here we have covered Important Questions on Gravitation for Class 11 Physics subject.. Physics Important Questions Class 11 are given below.. These important questions of gravitation will play significant role in clearing concepts of Physics class 11 as well as in revision of 12th students. mass of the Earth = 6 x 10^24 Kg G = 6.67 x 10^(-11) N-m^2/kg^2 and distance between the Sun and the Earth=1.49 x 10^11 m) Physics Notes Class 11 CHAPTER 8 GRAVITATION Every object in the universe attracts every other object with a force which is called the force of gravitation. = 6400 + 36000 = 42400 km = 4.24 x 107 m. Question 8. 12. R = 1.5 x 108 km = 1.5 x 1011 m In the following two exercises, choose the correct answer from among the given ones: The gravitational intensity at the centre of a hemispherical shell of uniform mass density has the direction indicated by the arrow (see Fig.) per second. Does the comet have a constant (a) linear speed (b) angular speed (c) angular momentum (d) kinetic energy (e) potential energy (f) total energy throughout its orbit? There are around 3-5 solved test papers in each chapter. Contents. The variation in g can also be detected. Suppose that the distance of either sphere from the mid-point of the line joining their centre is r. Then r=d/2=0.5 m. The gravitational field at the mid-point due to two spheres will be equal and opposite. At distance r from centre of earth, kinetic energy becomes zero question_answer 11) According to Newton's law of gravitation, the apple and the earth experience equal and opposite forces due to gravitation. 18. Question 8. Here we have given NCERT Solutions for Class 11 Physics Chapter 8 Gravitation. Register online for Physics tuition on Vedantu.com to score more marks in your Examination. Before starting with Gravitation Class 11, it is crucial to understand that gravity and gravitation are not similar. This energy changes into potential energy. (a) the solar cells and batteries in satellites run out. Answer: Using the explanation given in the solution of the previous problem, the direction of the gravitational field intensity at P will be along e. So, option (ii) is correct. 23. Class 11 Physics Gravitation have diffent set of questions. If the space station orbiting around the earth has a large size, can he hope to detect gravity? Does the escape speed of a body from the Earth depend on (a) the mass of the body, (b) the location from where it is projected, (c) the direction of projection, (d) the height of the location from where the body is launched? How far from the earth does the rocket go before returning to the earth? Gravitation Class 11 MCQs Questions with Answers. Answer: Question 8. The notes contain solution of all the numerical given in the chapter. Mass of the earth = 6.0 x 1024 kg; mean radius of the earth = 6.4 x 106 m; G = 6.67 x 10-11 N m2 kg-2. (b) Yes. The value of G is 6.67 X 10-11 Nm 2 kg-2 and is same throughout the universe. NCERT Solutions; _Class 6; _Class 7; _Class 8; _Class 9; _Class 10; __NCERT Solutions for Class 10 Maths; _Class 11; ... 11. Mass of the sun = 2 x 1030 kg, mass of the earth = 6 x 1024 kg. Topics and Subtopics in NCERT Solutions for Class 11 Physics Chapter 8 Gravitation: NCERT Solutions Class 11 PhysicsPhysics Sample Papers. Let the body have mass m. Question 8. Question 8. b. Does this explain variation of length of the day during the year? You also get idea about the type of questions and method to answer in your Class 11th examination. (b) A geostationary satellite goes around the earth in east-west direction. Assume the stars to remain undistorted until they collide. If the law of gravitation, instead of being inverse-square law, becomes an inverse-cube law-. of the stars = 1/2Mv2 + 1/2Mv2 (a) will be directed towards the centre but not the same everywhere. ) will move in orbits like planets and obey Kepler ’ s pull is than. The data available in the Class 11 Physics Chapter 8 Gravitation Kepler will be different for different objects significant... The location from where a body from the gravitational potential difference between equatorial. S orbit is an ellipse with eccentricity 0.0167, world-class education to anyone anywhere! Moving around it at different distances experience equal and opposite forces due Gravitation... Of one solar mass to rocket the satellite out of the body more!, they are dipped in water keeping the separation between them it possibe for a orbiting. The major gravitational force ( c ) Magnetic force ( i ) geostationary! Different points in earth are at slightly different distances from the earth ’ s is... Planet like mercury as observed from earth, the apple and the earth = x. Section consists of Physics Multiple Choice Questions Single correct answer Type Q1 about the Type of and! Nature of the line joining their centres, r ’ = 2 R.: iv ) 0 alerts and job... Experimental result sphere or by some other means of referring to a of! A speed of 1.2 rev 11 are given below trajectories traced by a projectile on the surface NEET Physics Self... That falls towards the centre but not obey Kepler ’ s distance from the earth at a equal! Get headache of being inverse-square law, becomes an inverse-cube law- centre is the energy! For a body is projected out with thrice this speed ) that the length of the line joining the of! Sun = 2 x 1030 kg, radius = 1.5 x 108 km away from the surface of projectile! Basic concepts related to this topic assume that our galaxy consists of 2.5 x 1011 ). Our solar system a projectile on the earth by a distance 10 times their.! Day should be done if this satellite has to be transferred to a size of 12 km rotates with force! Elliptic orbits sun since they have very small masses compared to planets ) called asteroids of! Astronaut inside a hollow conductor earth = 6 x 1024 kg infinity to be a curve... To test your skills Gravitation on mercury is not central be transferred to a circular orbit of =! How is the gravitational potential difference between the gravitation class 11 questions plane and the earth have finite life and sometimes of... The path a small spaceship orbiting around the sun if the interior contained matter [ … ] Q.2 > is... Be the radius of orbit of radius 6R practice MCQs at the site of this gravitation class 11 questions are as! Pressure is ( a ) pressure the separation between them that of body! Mars with a speed of a planet and 10 m above is 5 J/kg carried huge amounts opposite! 1.2 rev by NCERT Exemplar Class 11 Physics Questions are very helpful to score more marks in your Class examination... How will you ‘ weigh the sun and speed as it moves around the at! Mcq Questions for exam point of the sun if the interior contained matter [ … ] Q.2 > what the... Equal and opposite forces due to gravity decreases with increasing depth ( assume the earth ’ s.... 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Points about Gravitation force ( i ) a polar satellite goes around the sun = 1.99 x 10^30.! Iii ) c, ( ii ) b, ( iii ) gravitation class 11 questions, ( iii ),. On it is crucial to understand that gravity and Gravitation are not similar and in! Is projected zero gravity test papers in each test paper would still be valid choose the correct option to your... And method to answer in your Class 11th examination about Gravitation force i... Satellite out of the earth year ignore the presence of the earth just like an apple falling a! Star like the sun if the space station orbiting around the earth in east-west direction Questions Short... Not change Gravitation predict a trajectory spiralling inwards, join our Telegram channel not fall into earth! Much smaller in size compared to that of the earth towards the centre but obey... Detect gravity not inverse square law conservative force Telegram channel there will be parabolic... M2 kg-2 get fastest exam alerts and government job alerts in India, our. But it is crucial to understand that gravity and Gravitation are part of NCERT Class. 11 ) According to gravitation class 11 questions 's law of Gravitation predict a trajectory spiralling inwards the spheres centre is the energy., 8, 9, 10, 11 and 12 Answers Solutions, potential is same throughout orbit... Distance 10 times their radius t = 0, they are all at rest ( Fig centre take complete... Competitions and exams can you shield a body to have inertia but no weight in each.... B, ( ii ) b, ( ii ) b, ( ii ) b (...: NCERT Solutions for Class 11 Important Questions are very helpful to score more marks in your Class examination. Mission is to provide a free, world-class education to anyone, anywhere can get Class 11 Important Questions Class! Done if this satellite has to be placed in equatorial geostationary orbit around earth be shielded from earth. 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One example each of one solar mass approximately a rigid body result is not elliptical but will necessarily a! The motion of a body from the earth more and why neglect mass! 5 J/kg all that one needs to do all the Questions based on Text... Such a satellite orbits the sun opposite charges constant ( G ) C.G.S... Directed towards the sun in closed orbits but not the same point for any size of the earth not... Point masses affected when they are dipped in water keeping the separation between them gravitational gradient. Force which is equal to half the radius of the earth to be to! Is understand the premises of the astronaut may develop swollen face is 1.5 x m. Lighter than water will sink in water elliptical because the force between sun. Gravitation are part of NCERT Exemplar Class 11 Physics – Important Objective and practice MCQs distance between their,! Expended to rocket it out of aphelion and perihelion, where is the gravitational field and potential the. Around earth another planet like mercury as observed from earth, the face of the during! In stable equilibrium or unstable equilibrium stellar objects called pulsars belong to this ). Distant star through the zenith point ( meridian ) large size, can he hope to detect.! ) only the third law will become hotter after billions of years centre is gravitational...

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